Reducing color formers in 1,4-butanediol

Details Reducing color formers in 1,4-butanediol Reducing color formers in 1,4-butanediol

1979-05-29

1980-07-15

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568868, C07C 3120, C07C 2924

Patent

active

042130000

ABSTRACT:
1,4-Butynediol is catalytically hydrogenated under conventional conditions to produce a reaction product containing 1,4-butanediol. This reaction product is then hydrogenated under acid conditions, i.e., pH 1-6 and temperatures of 120.degree.-150.degree. C., to produce a 1,4-butanediol product. Upon further separation, the 1,4-butanediol is practically free from compounds that would produce color when the diol is used to make polyesters.

REFERENCES:
patent: 2768214 (1956-10-01), McKinley et al.
patent: 2950326 (1960-08-01), Hort
patent: 2953605 (1960-09-01), Hort
patent: 2967893 (1961-01-01), Hort et al.
patent: 3449445 (1969-06-01), Wetherill
patent: 3950441 (1976-04-01), Rudoff et al.
patent: 4048116 (1977-09-01), Voges et al.

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